摘要
结合立体传质塔板(CTST)和悬挂式降液管各自的优势,在CTST塔板的基础上组合悬挂式降液管。以此为实验塔板,在直径为570 mm的有机玻璃塔中以空气-水为实验物料进行冷漠实验,对此种塔板的板压降、降液管的液层高度、液流孔孔流系数等流体力学性能进行了实验研究,并与鼓泡型塔板进行了对比。结果表明,复合型立体传质塔板的板压降低于弓形降液管的CTST和悬挂式降液管的筛板(MD筛板)。在高液相负荷下,复合立体传质塔板降液管液层高度远低于MD筛板,具有更大的液体处理能力。悬挂式降液管液流孔的孔流系数主要与开孔的水力半径有关,受开孔率影响较小。得到了复合立体传质塔板降液管几种孔型的孔流系数值。
Combining the advantages of both CTST tray and multiple downcomer tray,the new CTST-MD compound tray is set up.The experiment is carried out with air-water system in a cold model organic glass column with 570 mm diameter.The influences of plate pressure,the clear liquid height and orifice coefficient in hang downcomer on the hydrodynamic properties are studied.The data is compared with the sieve tray and valve tray with hang downcomer.The result shows that the pressure drop of the CTST-MD tray is less than the CTST and MD sieve tray.The CTST-MD tray has high processing capacity under high liquid load.The orifice discharge coefficient is mainly determined by hydraulic radius.The orifice discharge coefficient of CTST-MD is obtained in different aperture ratio.
出处
《现代化工》
CAS
CSCD
北大核心
2014年第10期139-142,共4页
Modern Chemical Industry
基金
河北省科学技术研究与发展计划项目(12276710D)
河北省高等学校科学技术研究重点项目(ZH2011242)
关键词
复合立体传质塔板
悬挂式降液管
降液管液层高度
孔流系数
combined trapezoid spray tray
hang downcomer
liquid loading intensity
orifice discharge coefficient
